An adaptive polar-orbiting meteorological satellite signal receiving antenna

Abstract

An adaptive polar-orbiting meteorological satellite signal receiving antenna, a lower fixing plate and an upper fixing plate are installed in parallel on one side of a fixing rod, a stepper motor is installed on the fixing rod at the lower part of the lower fixing plate, the lower end of the screw rod passes through the lower fixing plate and is connected to the output shaft of the stepper motor, the upper end of the screw rod is connected to the upper fixing plate, the screw rod is threadedly connected to a slider, a copper tube is spirally wrapped around the outside of the fixing rod, the upper end of the copper tube is connected to the fixing rod, and the lower end of the copper tube is connected to the slider. The adaptive polar-orbiting meteorological satellite signal receiving antenna of the present invention has a simple and reliable structure, a small size, a light weight, and the data quality meets general requirements, and is suitable for application on small, moving carriers.

Description

Technical Field

[0001] The invention relates to the field of meteorological satellite application research. Background Art

[0002] Polar-orbiting meteorological satellites usually operate for 90 to 110 minutes, and the direction vector relative to the receiving point changes dynamically. Therefore, traditional receiving antennas require a set of mechanical structures that can rotate horizontally and pitch up and down to control the antenna to track the satellite in azimuth and altitude at all times. This method has the advantage of high signal quality, but it also leads to the disadvantages of complex receiving equipment structure, high cost, large weight and volume, and is difficult to promote on moving carriers such as vehicles and small and medium-sized ships. Summary of the invention

[0003] In order to reduce the cost of polar-orbiting meteorological satellite receiving equipment and reduce the requirements for carrier installation conditions, the present invention provides an adaptive polar-orbiting meteorological satellite signal receiving antenna.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: an adaptive polar-orbiting meteorological satellite signal receiving antenna, a lower fixing plate 7 and an upper fixing plate 9 are installed in parallel on one side of a fixing rod 8, a stepper motor 1 is installed on the fixing rod 8 at the lower part of the lower fixing plate 7, the lower end of the screw rod 4 passes through the lower fixing plate 7 and is connected to the output shaft of the stepper motor 1, the upper end of the screw rod 4 is connected to the upper fixing plate 9, the screw rod 4 is threadedly connected to the slider 3, a copper tube 10 is spirally wrapped around the outside of the fixing rod 8, the upper end of the copper tube 10 is connected to the fixing rod 8, and the lower end of the copper tube 10 is connected to the slider 3.

[0005] The slider 3 is slidably mounted on the slide rod 5 , the slide rod 5 is located outside the screw rod 4 , and the upper end of the slide rod 5 is connected to the upper fixing plate 9 , and the lower end of the slide rod 5 is connected to the lower fixing plate 7 .

[0006] A rainproof cap 11 is installed on the top of the fixing rod 8 .

[0007] The lower stop valve 2 is installed on the lower fixing plate 7 , and the upper stop valve 6 is installed on the upper fixing plate 9 .

[0008] The adaptive polar-orbiting meteorological satellite signal receiving antenna of the present invention has a simple and reliable structure, a small size, a light weight, and the data quality meets general requirements, and is suitable for application on a small, moving carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the antenna status when the satellite elevation angle is 90°.

[0010] Figure 2 This is a schematic diagram of the antenna status when the satellite elevation angle is 30°.

[0011] In the figure: 1. stepper motor, 2. lower stop valve, 3. slider, 4. lead screw, 5. slide rod, 6. upper stop valve, 7. lower fixing plate, 8. fixing rod, 9. upper fixing plate, 10. copper tube, 11. rain cap. DETAILED DESCRIPTION

[0012] Aiming at the LRPT standard signal of the VHF band of the polar-orbiting meteorological satellite, the present invention provides a portable adaptive antenna for receiving polar-orbiting meteorological satellite signals, the structure of which is as follows: Figure 1 and Figure 2 As shown, a lower fixing plate 7 and an upper fixing plate 9 are installed in parallel on one side of the fixing rod 8, a stepper motor 1 is installed on the fixing rod 8 at the lower part of the lower fixing plate 7, the lower end of the screw rod 4 passes through the lower fixing plate 7 and is connected to the output shaft of the stepper motor 1, the upper end of the screw rod 4 is connected to the upper fixing plate 9, the screw rod 4 is threadedly connected to the slider 3, the slider 3 is slidably installed on the slider 5, the slider 5 is located outside the screw rod 4, and the upper end of the slider 5 is connected to the upper fixing plate 9, the lower end of the slider 5 is connected to the lower fixing plate 7, the copper tube 10 is spirally wrapped around the outside of the fixing rod 8, the upper end of the copper tube 10 is connected to the fixing rod 8, and the lower end of the copper tube 10 is connected to the slider 3. The lower stop valve 2 is installed on the lower fixing plate 7, the upper stop valve 6 is installed on the upper fixing plate 9, and the rain cap 11 is installed on the top of the fixing rod 8.

[0013] Due to the different satellite elevation angles, the shape of the receiving antenna should change accordingly. When in use, the stepper motor 1 drives the screw 4 to rotate, thereby driving the slider 3 to move along the screw 4 and the slide bar 5 to the specified position, and the upper stop valve 6 and the lower stop valve 2 are used to stop. At this time, the copper tube 10 is deformed, and its spiral pitch d2 changes to d1, and the spiral diameter d4 changes to d3, which is conducive to the antenna receiving satellite signals. When the satellite elevation angle is 30°, the antenna state is as follows: Figure 2 shown.

[0014] The present invention is described by way of embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present invention.

Claims

1. An adaptive polar-orbiting meteorological satellite signal receiving antenna, characterized in that: A lower fixing plate (7) and an upper fixing plate (9) are installed in parallel on one side of the fixing rod (8); a stepper motor (1) is installed on the fixing rod (8) at the lower part of the lower fixing plate (7); the lower end of the screw rod (4) passes through the lower fixing plate (7) and is connected to the output shaft of the stepper motor (1); the upper end of the screw rod (4) is connected to the upper fixing plate (9); the screw rod (4) is threadedly connected to the slider (3); the copper tube (10) is spirally wound around the outside of the fixing rod (8); the upper end of the copper tube (10) is connected to the fixing rod (8); the lower end of the copper tube (10) is connected to the slider (3); the slider (3) is slidably installed on the slide rod (5); the slide rod (5) is located outside the screw rod (4); the upper end of the slide rod (5) is connected to the upper fixing plate (9); and the lower end of the slide rod (5) is connected to the lower fixing plate (7).

2. The adaptive polar-orbiting meteorological satellite signal receiving antenna according to claim 1, characterized in that: A rainproof cap (11) is installed on the top of the fixing rod (8).

3. The adaptive polar-orbiting meteorological satellite signal receiving antenna according to claim 1, characterized in that: The lower stop valve (2) is installed on the lower fixing plate (7), and the upper stop valve (6) is installed on the upper fixing plate (9).

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